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eruption - 7 dictionary results

e⋅rup⋅tion

  [i-ruhp-shuhn]
Use eruption in a Sentence
–noun
1. an issuing forth suddenly and violently; outburst; outbreak.
2. Geology. the ejection of molten rock, steam, etc., as from a volcano or geyser.
3. something that is erupted or ejected, as molten rock, volcanic ash, or steam.
4. Pathology.
a. the breaking out of a rash or the like.
b. a rash or exanthem.
Origin:
1375–1425; late ME < L ēruptiōn- (s. of ēruptiō). See erupt, -ion

Related forms:
e⋅rup⋅tion⋅al, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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e·rup·tion   (ĭ-rŭp'shən)   
n.  
    1. The act or process of erupting.
    2. An instance of erupting.
    3. An appearance of a rash or blemish on the skin.
    4. Such a rash or blemish.
  2. A sudden, often violent outburst.
    1. An appearance of a rash or blemish on the skin.
    2. Such a rash or blemish.
  4. The emergence of a tooth through the gums.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Eruption

E*rup"tion\, n. [L. eruptio, fr. erumpere, eruptum, to break out; e out + rumpere, to break: cf. F. ['e]ruption. See Rupture.]

1. The act of breaking out or bursting forth; as: (a) A violent throwing out of flames, lava, etc., as from a volcano of a fissure in the earth's crust. (b) A sudden and overwhelming hostile movement of armed men from one country to another. --Milton. (c) A violent commotion.

All Paris was quiet . . . to gather fresh strength for the next day's eruption. --W. Irving.

2. That which bursts forth.

3. A violent exclamation; ejaculation.

He would . . . break out into bitter and passionate eruditions. --Sir H. Wotton.

4. (Med.) The breaking out of pimples, or an efflorescence, as in measles, scarlatina, etc.
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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eruption 
1555, from L. eruptionem (nom. eruptio) "a breaking out," from stem of erumpere "break out, burst forth," from ex- "out" + rumpere "to break, rupture" (see rupture).
Online Etymology Dictionary, © 2001 Douglas Harper
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Main Entry: erup·tion
Pronunciation: i-'r&p-sh&n
Function: noun
1 : an act, process, or instance of erupting eruptionof the tooth from the gum>; specifically : the breaking out of an exanthem or enanthem on the skin or mucous membrane (as in measles)
2 : something produced byan act or process of erupting: as a : the condition of the skin or mucous membrane caused by erupting b : one of the lesions (as a pustule) constituting this condition
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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eruption e·rup·tion (ĭ-rŭp'shən)
n.

  1. An appearance of a rash or blemish on the skin.
  2. Such a rash or blemish.
  3. The emergence of a tooth through the gums.
e·rup'tive (-tĭv) adj.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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eruption   (ĭ-rŭp'shən)  Pronunciation Key 
The release of gas, ash, molten materials, or hot water into the atmosphere or onto the Earth's surface from a volcano or other opening in the Earth's surface.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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